Seriously, man's best friends are rolls of gaffer tape (a.k.a. duct tape) and utility knives. I came to know and love them during my internship as a props assistant. Although, you've got to be careful with knives. There weren't many accidents but when I was 12, I cut my finger. The blood just kept dripping. *shudders*
Still, I FREAKING LOVE GAFFER TAPE AND UTILITY KNIVES. Such a man, I am.